I've now read the first three Shopaholic book by Sophie Kinsella and my initial opinion still holds, and then some! That's high praise for me who tends to drop a series after a couple of books (Harry Potter is a notable exception.).
They are extremely funny (the laugh out loud in public and read bits to your cat kind of funny) and still very pertinent to those who want to take better control (or not, for that matter) of their finances.
Very, very enjoyable!
"Life's but a walking shadow, a poor player that struts and frets his hour upon the stage and then is heard no more. It is a tale told by an idiot, full of sound and fury, signifying nothing."